Improvement in hand tenoning-machines



'UNITED STATES PATENT OFFICE.

IIrIcIIAnIJ eALvIN, or wILIIEs-BARR, rnNIvsrL-VANIA.

lMPROVEll/INT` IN HAND TENONING-MACHlNES.

Specidcation forming part of Letters Patent No. 35,873, dated July 15, 1862.

. To @ZZ whom, it may concern;

Be it known that I, MICHAEL GALvIN, of Wilkes-Barr, in the county of Luzerne and State of Pennsylvania, have invented a new and Improved Tenoning-Machine; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l is a longitudinal vertical section of my invention, taken on the line :c m, Fig. 2; Fig. 2, an inverted plan of the same. Fig. 3 is an end view of the same. view of the same with the plane fitted in it.

Similar letters of reference indicate corresponding parts in the several figures.

This invention relates to an improved machine for cutting tenons by hand, and is designed chiey for cutting tenons on door-rails and similar work.

The object of the invention is to obtain a simple and eiiicient device for the work-bench which will greatly facilitate the cutting of tenons by the manual process.

The invention is an improvement ou a device for which Letters Patent were granted to me, bearing date March 18, 1862; and it consists in providing the device with a movable or adjustable bed so arranged that the tenon may, by a very simple adjustment, be cut centrally on the stu or work, or at a greater' or less distance at one side of the center, as may be desired.

To enable those skilled in the art to fully understand and construct my invention, I will proceed to describe it.

A represents a rectangular frame or box, which should be suiciently wide to receive the widest stu onwhich the tenons are to be cut. B is a screw inserted in one side of the box to clamp the stuff firmly therein. -(See Figs. 3 and et.) One end of this box A has two bars, a a, projecting parallelly and longitudinally from it, the ends of said bars having projections b at their upper and lower surfaces, to which crossvbars c c are attached, and which are parallel with the end of the box A, as shown in Fig. 2. These cross-bars c c, in connection with the end d of the box A, opposite to them, form guides for a plane7 (l. (Shown in Figs. l and 4.)

The box A is connected by hinges e e to a frame, D, which is permanently secured to the Fig. 4 is an endwork bench at or near its front edge, and across the end d of the box A there is secured a bar, f, to which an adjustable pressure-bar, y, is fitted by guide or steady pins 7L h, said bar g having a set-screw, E, bearing against it, by turning which the bar g may be made to press down the work or stuff firmly on the bottom i of the box A. (See Figs. 1 aud3.)

The bottomz of the box A is not permanently secured in the latter, but is adjustable, and may be adjusted higher orlower by means of two transverse sliding bars, j j, which are fitted in oblique grooves k k in the framing of the box, and are moved obliquel y up and down by means of two arms, ZZ, the outer ends of which are attached to the bottoms of the sliding bars jj, andthe inner ends to the ends of a lever, m, which is provided with a screw, n, and thumb-nut 0, the screw n passing through a curved slot in a transverse bar, p, of the framing ofthebox A, as shown clearlyin Fig. 2. Thus it will be seen that by adjusting the lever m the oblique sliding bars jj maybe thrown more or less inward or outward, and the bottom i consequently adjusted higher or lower in the box A, as may be desired.

The tenons are cut by adjusting the stuff in the box A with one end in contact with the outer cross-bars, c c, and then firmly clamping the stuff in the box by screwing up the screw B and adjusting t-he bar g firmly upon it. The tenon is cut by planing the stuff transversely, the plane being shoved back and forth between one of thecross-bars c and the end d of the box A, the depth of the cut being regulated by adj listing side pieces or stops, p p, at each side of the plane C, and which rest or bear on the cross-bars c and the end of the box. When the stuff is cut at one side, the box A is inverted and the opposite side cut, the plane C being iitted between the cross-bar c, at the opposite side of the bars a a, and the corresponding end of box A.

Vhen the teuon is to be cut centrally on the stuff, the latter is adjusted so that its center will be in line with the centers of the bars a a, and when the tenon is required at one side of the center of the stuff the bottom t' is adjusted accordingly, the thickness of the tenen being regulated by adjusting theside pieces or stops, pp, of the plane C.

The box A is provided with a sliding scale, A', and also with a stationary scale, B.

I do not claim the reversible box A,nor the method of clamping the stuff therein and outeratedsubstantially as Shown, when used in ting the tenons, for that is old and may be combination with the box A and plane C, all seen in the device formerly patented by me, arranged as and for the purpose specified. as previouslyalluded to; but MICHAEL GALVIN.

I do claim as new and desire to secure by Vtnesses: Letters Patent- C. BENNETL.P

rlhe adjustable bottom z', arranged to he op- IRA MAREY. 

